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[Anthropometric study on normal human auricle in Japan].
Nihon Jibiinkoka Gakkai Kaiho
|March 22, 2001
Summary
Japanese auricular morphology shows significant growth throughout life. Auricular size has increased compared to past generations, with continued changes observed into adulthood.
Area of Science:
- Anthropology
- Gerontology
- Human biology
Background:
- Japanese population exhibits increasing physical stature and longevity.
- Understanding anthropometric changes across the lifespan is crucial.
Purpose of the Study:
- To investigate anthropometric auricular morphology in Japanese individuals across all age groups.
- To document changes in ear size and shape over time in the Japanese population.
Main Methods:
- Study involved 1,958 healthy Japanese participants (966 males, 992 females) across 18 age groups.
- Measurements included ear length, ear width, ear attachment length, auricular cartilage length, and auricular lobe length.
- Standardized caliper measurements were performed by a single observer.
Main Results:
- Males generally exhibited larger auricular measurements than females across most age groups.
- Significant auricular growth occurred until late adolescence, with continued growth into advanced age.
- Current auricular size in Japanese individuals is larger than historical data.
Conclusions:
- Auricular size changes are influenced by growth up to late adolescence.
- Age-associated auricular morphology changes persist throughout adulthood in the Japanese population.